If the fediverse ever wants to scale, something like this has to come about. I personally think we need a whole lot of regional servers. For example, we make a cluster of servers by country, so lemmy.us, Lemmy.de, etc. Then, when those servers start to fill to a certain threshold (say 1000 users), we break them out regionally, so lemmy.ne.us, lemmy.se.us, etc. The way servers are assigned would be by selecting your country and region. It shouldn’t be too complex and would simplify the sign up people for a lot of people.